Yes, I have been in a few clubs for about a year, but it seems like people just show up for the meeting an activities, and then leave. It's not what I am used to, where a small thung turns into many days and many people coming by to talk, trade stories... do you talk to the people you meet outside of a group of people? I do not what impose or be rude to people if that is not what is normal here.
I know exactly why you never see UFOs. Turns out, humans are pretty good at identifying flying objects.